C＃反射实例

1 创建用于反射使用的DLL

新建一个C#类库项目，拷贝源代码如下，编译生成DLL（假如DLL的文件名是Webtest.dll）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Webtest
{
    public class ReflectTest
    {
        public ReflectTest()
        { }
        public string WriteString(string s)
        {
            return "欢迎你，" + s;
        }
        public static string WriteName(string s)
        {
            return "欢迎光临，" + s;
        }
        public string WriteNoPara()
        {
            return "您使用的是无参数方法";
        }
    }
}

2 应用于反射的例子

在ASPNET页面中加入以下函数：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Reflection;
namespace Test1
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            test();
        }
        public void test()
        {
            System.Reflection.Assembly ass;
            Type type;
            object obj;
            try
            {
                ass = System.Reflection.Assembly.LoadFile(@"D:\Webtest.dll");
                type = ass.GetType("Webtest.ReflectTest");
                System.Reflection.MethodInfo method = type.GetMethod("WriteString");
                obj = ass.CreateInstance("Webtest.ReflectTest");//必须使用名称空间+类名称
                string s = (string)method.Invoke(obj, new string[] { "shaolijuan" }); //实例方法的调用
                Response.Write(s + "<br>");
                method = type.GetMethod("WriteName");//方法的名称
                s = (string)method.Invoke(null, new string[] { "shaolijuan" }); //静态方法的调用
                Response.Write(s + "<br>");
                method = type.GetMethod("WriteNoPara");//无参数的实例方法
                s = (string)method.Invoke(obj, null);
                Response.Write(s + "<br>");
                method = null;
            }
            catch (Exception ex)
            {
                Response.Write(ex + "<br>");
            }
            finally
            {
                ass = null;
                type = null;
                obj = null;
            }
        }
    }
}

原文地址：http://www.cnblogs.com/tuyile006/archive/2007/01/16/621388.html